Financial Instruments - Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not designated as hedging instrument - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net gain (loss) from investment activities
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ 140	$ (105)	$ (114)	$ (738)
Equity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	79	32	(132)	(618)
Credit contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	29	(63)	3	(29)
Commodity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ 32	$ (74)	$ 15	$ (91)